linux-ext4 - Re: Some 64-bit tests

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Message-ID: <20090610181320.GA6953@mit.edu>
Date:	Wed, 10 Jun 2009 14:13:20 -0400
From:	Theodore Tso <tytso@....edu>
To:	Nick Dokos <nicholas.dokos@...com>
Cc:	"Aneesh Kumar K.V" <aneesh.kumar@...ux.vnet.ibm.com>,
	Valerie Aurora <vaurora@...hat.com>, linux-ext4@...r.kernel.org
Subject: Re: Some 64-bit tests

On Mon, Jun 08, 2009 at 11:13:48PM -0400, Nick Dokos wrote:
> 
> I tried this on top of 2.6.30-rc8 and I hit a couple of BUGs, one in pdflush
> and the other in the Lustre teest program (liverfs):
> 
> Jun  8 22:49:13 shifter kernel: ------------[ cut here ]------------
> Jun  8 22:49:13 shifter kernel: kernel BUG at fs/ext4/mballoc.c:3245!
> Jun  8 22:49:13 shifter kernel: invalid opcode: 0000 [#1] SMP 

Hmmm, that would be the BUG_ON check:

     BUG_ON(size <= 0 || size > EXT4_BLOCKS_PER_GROUP(ac->ac_sb));

						- Ted
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